"After Elliott Management took a stake in Twitter, Singer pushed to oust Jack Dorsey and control four seats on the board after Dorsey announced he would move to Africa. A deal was reached that gave Elliott Management a seat on the board and left Dorsey as CEO."

-Wikipedia

Ha, moral of the story, never trust the promises of hand-rubbing vultures? Give them a few seats at the table, and soon they are gobbing your entrails.